FIGURE 10 in A remarkable new species of Davilla Vand. (Dilleniaceae, Dolicocarpoideae) from the Brazilian Savanna supported by morphological and anatomical data

FIGURE 10. Cross-section of the leaf blades of Davilla elliptica (a–e), D. grandiflora (f–j), and D. pygmaea M.J. Silva (k–o), submitted to histochemical tests. a, d, j, l, n and o petiole. b, e, f, h, i and k. midrib. c, g and m leaf blade. Histochemical tests: a, b, f–h, k and l. Total alkaloids in tissues (indicated by the arrowhead and black color); note the presence of alkaloids in the parenchymatic cells of the pith, parenchyma rays and chlorophyllian parenchyma. c, d, i, m and n. positive reaction for phenolic compounds in tissues (indicated by the arrowhead and black color); note the presence of phenolic compounds in the endodermis cells in d, and in the idioblast secretions in n. e, j and o positive reaction for lignin; note the intense pink color of the fibers, xylem cells, and sclereids. ep = epidermis. en = endodermis. fi = fibers. pa = parenchyma. ph = phloem. pp = palisade parenchyma. sc = sclereids. vb = vascular bundle. xy = xylem. asterisks = idioblasts. arrows = Caspary strip. Scales: i = 500 μm; c, g, k, m and o = 200 µm. a, b, d, e, f, h, j, l and n = 50 µm.